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Swarfega is a brand of heavy-duty hand cleaner made by Deb Limited, a British company based in Denby, Derbyshire, and is used in engineering, construction and other manual trades, such as printing. It is a dark green, gelatinous, thixotropic substance used to clean grease, oil, printer's ink, or general persistent, hydrophobic dirt from the skin. Swarfega is used by working a small amount into dry skin, then wiping or rinsing off. As with other such cleaners, it can be more effective than soap or other common cleansing products at removing such dirt; Swarfega became virtually ubiquitous in environments where this kind of dirt is common, such as garages and machine shops. ==History== Swarfega was invented in 1947 by Audley Bowdler Williamson (28 February 1916 - 21 November 2004), an industrial chemist from Heanor, Derbyshire.〔"Latest Wills", The Register, ''The Times'', 19 August 2006, page 67.〕 In 1941 he had founded a detergent-sales company, Deb Silkware Protection Ltd., based in Belper, to produce a formulation for extending the life of silk stockings.〔(Deb Proprietaries history )〕 The name derived from "debutante",〔 to signify the newness of the company and its products. The introduction of nylon stockings threatened to render it superfluous; however, Williamson suggested that mechanics had already found it useful for cleaning their hands. This may have been a myth encouraged to attract interest, but the product was reformulated and marketed as Swarfega, becoming the company's main product. (The company’s name had been changed to Deb Chemical Proprietaries Ltd.) Before Swarfega, mechanics used a variety of harsh home-brewed cleaners such as paraffin (kerosene), sand and petrol. These removed the skin's natural oils, leading to dry, cracked skin and the risk of occupational dermatitis. The effectiveness of Swarfega is due to the hydrophobic ingredients, notably medium-chain (C9-C16) alkanes and cycloalkanes; in combination with an emulsifier (Trideceth-5 in current formulations). These are more efficient at solubilizing oil and grease than a detergent alone. In the UK, the word "Swarfega" may be used as a generic term for all similar cleaners, particularly if they have the same green jelly-like appearance as genuine Swarfega. According to the company website;〔()〕 The name derives from “swarf”, being the old Derbyshire engineering term for oil and grease and “ega”, as in “eager to clean”.This may be a bit confusing, as "swarf" now commonly refers to the metal shavings and chips resulting from metalworking operations. The word did not originally mean oil or grease as Deb claim, but rather the waste material from a grindstone (or similar material resulting from wear in a machine). This material would be a wet or oily mixture of grit abraded from the wheel and filings from the workpiece. Deb expanded its product range and has long offered a range of products either related to detergent ingredients, or sold to the same mechanical trades. Many of these such as Jizer, a water-rinsible degreaser used for washing mechanical parts rather than mechanics, first defined the original market for a new product that has now become commonplace. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Swarfega」の詳細全文を読む スポンサード リンク
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